> when downloading a website in more than one 
session,  
> the following happens sometimes:
> HTTrack tries to download an already existing file 
> (GIF or ZIP), aborts with an error (StatusCode: 416 
> Requested Range Not Satisfiable) and deletes that 
file!

Humm.. maybe due to the compression+range headers 
mixed, I really don't know how this is handled. I'll 
check that.

The best way would be to track headers exchanged 
(Experts/"activate debug mode") on bogus files.

Any bogus URL, and the way to reproduce the error?(you mail it to me:
roche@httrack.com)